A 6.3 magnitude earthquake hit Christchurch, New Zealand—the second major quake suffered by the city in the last five months—causing "multiple fatalities" and trapping hundreds of people inside buildings. The video above, which is somewhat graphic, shows some of the aftermath.

Unlike last September's 7.1 quake, which occurred early in the morning and killed no one, today's earthquake hit in the middle of a business day, causing widespread chaos as people attempted to rescue those trapped inside buildings and buses:

Christchurch resident Jane Smith, who works in the central city, earlier told the Herald a work colleague had helped with rescue efforts after a building facade collapsed on a bus on Colombo St.

"There's people dead. He was pulling them out of a bus. Colombo St is completely munted," she said.

TV3 reported that a person had died in the Christchurch suburb of Sumner.

The broadcaster showed footage of people being rescued from the Pyne Guinness Gould building, where it is believed some 200 people have been trapped.

It said the Provincial Chambers Building had also collapsed and more people were likely also trapped there.